What is best way to clean up thread on large threaded items(2"+)?

[Lil'John]

Title kind of states it.

Longer: I've got a Rubicon Express "johnny" joint and the threaded side is dinged up to the point that the fitting doesn't start.

Is there a good way to clean up the thread without buying a bit f'n tap or just replacing the housing?

 

[gozuki]

Thread file if you have one, triangular file if you don't.

 

[Lil'John]

Thread file if you have one, triangular file if you don't.

Does that work on an inside thread? Going to look it up.

 

[ThePanzerFuhrer]

What thread is it I may have a tap? I got a crate of large sized tap

 

[Lil'John]

What thread is it I may have a tap? I got a crate of large sized tap

No idea... I do know the snap ring on the other side is 2 1/4". I'll see if I can find out.

 

[gozuki]

Does that work on an inside thread? Going to look it up.

No, filing is typically done on OD threads. For an ID thread, take a smaller tap of the same pitch to clean the threads as you go around the ID

 

[Lil'John]

No, filing is typically done on OD threads. For an ID thread, take a smaller tap of the same pitch to clean the threads as you go around the ID

I'll take a look into this also. Paying a boat load of money for a 2" tap isn't overly bright when I could buy several joints for that price

 

[M92PV4U]

A small cutoff wheel and a dremmel or die grinder.

 

[Black Sabbath]

Does that work on an inside thread? Going to look it up.

Use a bolt of the right size/pitch as an impromptu tap. Grind a slot down the side if you expect to need clearance for junk or to provide a really soft "cutting" edge. Also grinding down the first few threads can help get it started.

 

[rockmup]

Does that work on an inside thread? Going to look it up.

Yes it can, depends on how deep you need to go

 

[bgaidan]

Yes it can, depends on how deep you need to go

Oooh. I've never seen ones with the ID file on the ends like that. I have several sets of just the square files without the round ends.

Damnit...now I gotta spend more money.

 

[bgaidan]

OP: Figure out what size it is. You'd be surprised what you can find in used/surplus for cheap on ebay. I regularly buy 1"+ NOS taps for ~$10 apiece for one-time use projects.